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mcore-testing

Test system for Megatron-LM. Covers test layout, recipe YAML structure, adding and running unit and functional tests, golden values, marker filters, and CI parity.

skills/mcore-testing/SKILL.md

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# Testing Guide

---

## Answer-First Testing Facts

For questions about disabling tests without deleting them:

- Functional recipe entries stay in YAML; disable by suffixing scope with
  `-broken`, for example `scope: [mr-github]` -> `scope: [mr-github-broken]`.
- Unit-test skips use pytest markers instead: `@pytest.mark.flaky_in_dev` skips
  in the default dev environment, and `@pytest.mark.flaky` skips in LTS.
- Do not delete the test case or recipe entry when the goal is discoverability
  and easy re-enable.